When a man gets trapped by a women that "accidentally" forgets to take her birth control when she says she is taking or should be taking her birth control.

(This does not apply to a man and a women who are truly in love)
(Guy#1) "I was seeing a chick for about three months. She was at my house every night and she turned down the heat in her apartment to save money. The pipes in her apartment ended up breaking because she turned down the heat too far. So, being the nice guy I invited her to live with me rent free until she could save money and get her own place again. After about six months she still had never cleaned my place, never offered any financial help, her unfolded laundry was stacked long my wall and the sex sucked and went down hill since the first month. I was sick of her lazy bull shit. The day I was going to ask her to move out, she told me, " I'm late"

(Guy #2) "Your fucking shitting me!?

(Guy#1) "So after two years of living in my house rent free and I'm trying to make it work for the child. She tells me that she is deliberately not cleaning to piss me off. Then a week later I catch her in a trailer home with another guy. At that point I can't gut her anymore and I give her the boot. In the ended she spread her legs, forgot her pill while deliberately not cleaning a household that was offered to her for free and now I'm paying her child support. She totally fucking Grease Trapped me!"

(Guy #2) "Fuck! What a Prostitute on a String!"

(Conversation was witnessed at a bar in downtown Wilmington, NC in March of 2012. The rest of the conversation was about what Grease Trapped and Prostitute on a String entailed. Not every day you can hear the origin of sayings.)
by Silente August 28, 2014
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An insult, mainly towards a fat or obese person, male or female, who refuses to do anything about their wieght and just keeps on eating fatty and greasy foods, and they frequently use excuses that such as "I will always be that way" or "God made me this way". Other grease traps wallow in their own misery at the fact that they are so fat and sit in front of the T.V. eating a bag of Doritos and drinking a mcDonalds milkshake while watching Maury or Oprah when they could be working out instead of eating so much grease. This is why they are called grease traps, because they are aware of the problem, and will not make healthy chioces in order to change the situation.
Girl #1: Oh that Tim guy eats way too much greasy foods. The sad thing is that he refuses to do a thing about it. He just keeps eating and eating.

Girl #2: He has become such a grease trap.

Girl #1: Yeah tell me about it. The fryers at McDonalds has less grease in their traps then he does.
by ~BluntBitch~ July 23, 2008
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A neighbourhood or place where greasy and ratchet people all converge. Crack heads, drunken teenagers, drag racers, and kids who linger around the McDicks that is open until midnight or later. Be wary when entering one of these. You may accidentally get sucked into its wormhole of greasiness.
Example #1

Boy: I hate Lynn Valley.

Girl: I love that grease trap #YOLOSWERVE.

Example #2

Girl: Doin' lines at Stacy's.

Boy: No! You can't do lines at that grease trap! Nobody has a hundie there!
by Mama B April 15, 2014
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When a over weight male can only have sex doggy style and has to put his stomach on the partners lower back. The sweat and grease build up between the two is known as the grease trap.
Kyle placed his stomach og sarahs lower back then when he was done he licked the grease trap.
by Boxsmasher111 September 14, 2011
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The often smelly crease of skin linking the ballsack or labia to the thigh.
Man, I went down on this girl last night and her Grease Trap smelled like McDonald's!
by GingerKill September 5, 2008
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Two or more morbidly obese people pressing their anal sphincters together so hard that they cannot shart
Today, I witnessed two people performing a McDonalds grease trap.
by Mr.Boxi3 November 10, 2015
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